Copper smelting from ore

c. 5000 BCE Fire and matter method

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Out of stone comes what cannot be seen in it: copper ore at 700 C and above in a reducing atmosphere (that is, with limited oxygen) yields metal. The earliest securely dated evidence of smelting comes from settlements of the Vinca culture (Belovode, Serbia), c. 5000 BCE. Native copper had been hammered for millennia before that, and tin bronze spreads mainly from the 4th-3rd millennium BCE.

Here appear the furnace, the crucible, control of draught and temperature and the selection of charge by the colour of the minerals, that is, the whole future toolkit of the laboratory.

Why this date

Archaeological dating. What is dated is smelting (reduction of copper from ore), not cold-working of native copper (Cayonu, Anatolia, 9th-8th millennium BCE) and not bronze. Belovode (Vinca culture, Serbia), c. 5000 BCE: the earliest securely dated smelting (Radivojevic et al. 2010). Tal-i Iblis (Iran): late 6th to 5th millennium BCE, a wide bracket. The Catalhoyuk 'slag' (c. 6500 BCE) has been reinterpreted as melting dross and heated mineral, not smelting. Roberts, Thornton, Pigott 2009 allow smelting in the early 6th millennium in the Near East, but without securely dated finds.

What it grew from

• Control of fire

  prerequisite for · Confidence: high

  Reducing copper from ore requires temperatures from 700 C upward and a reducing atmosphere, which only controlled incomplete combustion of fuel with limited air access provides.

  Link sources

  • Radivojević M., Rehren Th., Pernicka E., Šljivar D., Brauns M., Borić D. «On the origins of extractive metallurgy: new evidence from Europe», Journal of Archaeological Science 37(11) (2010)

    Reduction of copper ore to copper metal which requires reducing conditions and temperatures from c. 700 C upwards ... Obtaining reducing conditions by incomplete burning of fuel requires a controlled environment with limited air access

  • Gowlett J.A.J. «The discovery of fire by humans: a long and convoluted process», Philosophical Transactions of the Royal Society B 371(1696) (2016) Verified 25 Sep 2026

    Eventually, fire became embedded in human behaviour, so that it is involved in almost all advanced technologies.

  "Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.

What grew out of it

• Distillation and laboratory apparatus

  influenced · Confidence: medium

  Greco-Egyptian alchemy, where distillation apparatus is first described, grew out of the craft of metalworkers and goldsmiths (recipes for imitating gold and silver in the Leiden and Stockholm papyri); without metalworking this laboratory tradition would have arisen later or differently, but distilling liquids does not physically require smelting.

  Dispute: Historians agree that the practical root of alchemy lies in the craft of working metals, but the link runs through goldsmithing and the imitation of metals, not through smelting from ore. No historian has been found who states that smelting was a necessary condition for distillation.

  Link sources

  • Viano C. «Greco-Egyptian Alchemy», in: The Cambridge History of Science, vol. 1: Ancient Science, Cambridge University Press, 468-482 (2018)

    The earliest texts are probably artisans' workbooks, produced in the circle of the Egyptian kings' goldsmiths.

  • Principe L.M. «The Secrets of Alchemy» (excerpt), Distillations, Science History Institute (2013) Verified 20 Sep 2026

    In the cosmopolitan crossroads of Greco-Roman Egypt, the two streams of craft traditions and philosophical traditions coexisted. Their merger - probably in the third century AD - gave rise to the independent discipline of alchemy.

  "Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.

• Mass balance and the conservation principle

  influenced · Confidence: medium

  The metallurgists' fire assay (cupellation, precise weighing of small samples) was the main point of intersection between metallurgy and chemistry and in practice implied conservation of mass and constant composition long before Lavoisier.

  Dispute: The sources speak of Renaissance fire assay (Agricola, Ercker), not of copper smelting in the 5th millennium BCE; the continuity runs through the millennia-long tradition of metallurgical practice that began with smelting. The gap in time is large, and the nearest link to the weight method is 16th-century fire assay.

  Link sources

  • Martinón-Torres M., Rehren Th. «Alchemy, chemistry and metallurgy in Renaissance Europe: a wider context for fire-assay remains», Historical Metallurgy 39(1) (2005) Verified 25 Sep 2026

    Fire assay, as a technique for quantitative metallurgical analysis, was the most important point of intersection and, as such, it was essential for the development of modern metallurgy, but also of chemistry and science in general.

  • Martinón-Torres M., Rehren Th., Historical Metallurgy 39(1) (2005)

    Even if it was not formulated explicitly, in practice the assay hinted at the idea of conservation of mass and constant combining proportions.

  • Newman W. R. «What Have We Learned from the Recent Historiography of Alchemy?», Isis 102(2) (2011)

    Although mass balance had been implicitly assumed by metallurgists and alchemists for many centuries, it had existed in a subterranean and uneasy relationship with the dominant Aristotelian physics of the Middle Ages.

  "Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.

• Tin bronze smelting

  improved · Confidence: high

  Bronze is a direct improvement on smelted copper: the addition of tin gives a harder and more fusible metal that casts better, and the deliberate introduction of tin into the melt gave control over the composition of the alloy for the first time.

  Dispute: Between copper and tin bronze lies arsenical copper (Tal-i Iblis, 4th millennium BCE; Maikop), which most archaeometallurgists regard as an intermediate stage, so the passage from copper smelting to bronze was not a direct one. The early Balkan bronzes, according to Radivojevic et al. 2013, were obtained not by adding tin but by smelting mixed ores, that is, by the same process as copper.

  Link sources

  • Britannica, «Bronze (alloy)» (2024) Verified 24 Sep 2026

    Bronze is harder than copper, as a result of alloying that metal with tin or other metals. Bronze is also more fusible (i.e., more readily melted) and is hence easier to cast.

  • Muhly J. D. «Sources of Tin and the Beginnings of Bronze Metallurgy», American Journal of Archaeology 89(2), 275-291 (1985), 279

    The direct addition of molten tin to molten copper made possible a control over the alloy produced that could never be achieved in working with arsenic.

  • Muhly J. D. «Sources of Tin and the Beginnings of Bronze Metallurgy», American Journal of Archaeology 89(2), 275-291 (1985), 278

    arsenical copper was produced by the direct smelting of an arsenical copper ore. The arsenic came down into the molten copper because it was present in the ore body

  • Radivojević M., Rehren Th., Kuzmanović-Cvetković J., Jovanović M., Northover J. P. «Tainted ores and the rise of tin bronzes in Eurasia, c. 6500 years ago», Antiquity 87(338), 1030-1045 (2013) Verified 20 Sep 2026

    They too were found to derive from the smelting of copper-tin ores.

  "Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.

Links under review

• Firing of clay

  influenced · Confidence: medium

  All three sources are closed: two quotations are in the Journal of Archaeological Science (Elsevier, paywalled), the third in Antiquity (Cambridge), whose page opens but carries only the abstract while the quotation sits in the body. The first quotation also states Wertime's 1964 hypothesis, about which the authors themselves are critical.

  Experience of firing ceramics (control of temperature and of the redox atmosphere, the dark-burnished ware of Vinca) gave potters skills that smelting required; without it metallurgy would have appeared later or in a different form.

  Dispute: The classic hypothesis (Wertime 1964; Renfrew 1969) treats ceramic pyrotechnology as the precursor of smelting. Amicone et al. 2020, after examining 88 sherds from Belovode and Plocnik, conclude that graphite-painted pottery and metallurgy emerge at the same time and both draw on earlier experience with dark-burnished ware: "the two crafts are likely to have been generally linked, making them 'close cousins' rather than one being the precursor to the other".

  Link sources

  • Amicone S., Radivojević M., Quinn P.S., Berthold C., Rehren Th. «Pyrotechnological connections? Re-investigating the link between pottery firing technology and the origins of metallurgy in the Vinča Culture, Serbia», Journal of Archaeological Science 118, 105123 (2020)

    Advances in pottery firing technology, which predates metallurgy in many parts of the world, have been proposed as precursors to the emergence of metal extraction (Wertime, 1964 and literature therein). According to this theory, metallurgists gained transferrable skills from potters, including the ability to reduce metal oxides (Wertime, 1964, pp. 1264-1266).

  • Renfrew C. «The autonomy of the south-east European Copper Age», Proceedings of the Prehistoric Society 35, p. 38 (1969)

    refractory technology in the south-east European Chalcolithic had evolved sufficiently in the firing of pottery to provide the conditions required for smelting and casting of copper

  • Roberts B.W., Thornton C.P., Pigott V.C. «Development of metallurgy in Eurasia», Antiquity 83(322) (2009)

    The metal production process would not have been entirely novel, given that metal was preceded or paralleled by pyrotechnological activities creating other materials (e.g. ceramics) throughout Eurasia.

Node sources

• Radivojević M., Rehren Th., Pernicka E., Šljivar D., Brauns M., Borić D. «On the origins of extractive metallurgy: new evidence from Europe», Journal of Archaeological Science 37(11), 2775-2787 (2010)

  The first smelting event so far documented at Belovode occurs at c. 5000 BC, which makes it the earliest securely dated record of extractive metallurgy, anywhere.

• Radivojević M., Rehren Th. «Paint It Black: The Rise of Metallurgy in the Balkans», Journal of Archaeological Method and Theory 23(1), 200-237 (2016) Verified 20 Sep 2026

  The main focus is placed on copper minerals, ores, slags, slagged sherds and metal droplets coming from four Vinča culture settlements in Serbia and Bosnia and Herzegovina: Belovode, Pločnik, Vinča and Gornja Tuzla, all dated between c. 5400 and 4400 BC.

• Roberts B.W., Thornton C.P., Pigott V.C. «Development of metallurgy in Eurasia», Antiquity 83(322), 1012-1022 (2009)

  The best documented early copper smelting sites occur in the late sixth/early fifth millennium BC in areas far removed from the Fertile Crescent, such as Tal-i Iblis in south-eastern Iran (Radivojević 2007; Borić 2009) and Belovode in eastern Serbia.

"Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.

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